The law books used for the great reformation of Israel's social and religious institution were found in the temple in 621 BC during the reign of
Hezekiah
Josiah
Moses
Ahab
Hammurabi
Correct answer is B
The discovery of the law books in the temple and the subsequent reforms are associated with King Josiah of Judah. This event is described in 2 Kings 22-23 and 2 Chronicles 34-35. King Josiah initiated religious reforms in Judah, and during the repairs to the temple, the high priest Hilkiah found a book of the law (likely a portion of the Torah or Pentateuch). This discovery played a significant role in Josiah's efforts to restore proper worship and adherence to the laws of God.